EP0449395A1 - Manche ondulé enroulé en hélice - Google Patents

Manche ondulé enroulé en hélice Download PDF

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Publication number
EP0449395A1
EP0449395A1 EP91250022A EP91250022A EP0449395A1 EP 0449395 A1 EP0449395 A1 EP 0449395A1 EP 91250022 A EP91250022 A EP 91250022A EP 91250022 A EP91250022 A EP 91250022A EP 0449395 A1 EP0449395 A1 EP 0449395A1
Authority
EP
European Patent Office
Prior art keywords
hose
spiral
rope
corrugated hose
connection fitting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP91250022A
Other languages
German (de)
English (en)
Inventor
Kurt J. Boden
Stefan Bürger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chr Berghofer & Co Kg Metallschlauch- und Kompensatorenfabrik GmbH
Original Assignee
Chr Berghofer & Co Kg Metallschlauch- und Kompensatorenfabrik GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chr Berghofer & Co Kg Metallschlauch- und Kompensatorenfabrik GmbH filed Critical Chr Berghofer & Co Kg Metallschlauch- und Kompensatorenfabrik GmbH
Publication of EP0449395A1 publication Critical patent/EP0449395A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L11/11—Hoses, i.e. flexible pipes made of rubber or flexible plastics with corrugated wall

Definitions

  • the invention relates to a spiral or helically corrugated hose according to the preamble of claim 1.
  • the stainless steel wire spiral consists of a single solid wire, which is rigid due to its diameter and the modulus of elasticity of the material.
  • the stiffness of this solid wire spiral can be advantageous if the fully circular cross section of the hose is to be maintained and a stiffness is to be imparted to it. If the end of such a hose is to be connected to a connection fitting, there are considerable disadvantages. If the stainless steel wire spiral is not inserted into the connection fitting, the end of this stainless steel wire spiral can Damage the hose.
  • connection fitting If the stainless steel wire spiral is also introduced into the connection fitting, this connection fitting must be pre-processed in a corresponding manner and equipped with an axial bore or a radial bore. The stainless steel wire spiral must be bent at these holes and passed through part of the length of the hose connector and then hooked into the hole. For a safe design of such a connection, the end of the stainless steel wire spiral must still be fixed by graining or setting a welding point.
  • the object of the present invention is to provide a support for a deep-corrugated hose made of a material with a low modulus of elasticity, in particular made of PTFE, for those cases in which the stability of the shafts of the deep-corrugated hose is insufficient.
  • a support for a deep-corrugated hose made of a material with a low modulus of elasticity, in particular made of PTFE for those cases in which the stability of the shafts of the deep-corrugated hose is insufficient.
  • the invention has for its object to provide a support for such spiral or helically corrugated hoses, the insertion of a hose end in a connection fitting should be carried out in a very simple manner.
  • this object is achieved in that a rope is inserted into the troughs of the tube of the hose.
  • the rope is made of individual metal wires or polymer mono- or multifilaments formed.
  • the rope inserted in the wave troughs enables a high load due to permanent bending. This is possible due to the fact that the rope shows significantly less signs of fatigue than a solid wire spiral.
  • the hose is advantageously surrounded by a protective covering, in particular a braid.
  • hose end it is particularly advantageous to use at least one hose end in a connection fitting with or without a protective covering. It is particularly advantageous that the rope is spliced into its individual wires or filaments that are placed on the hose connector in the connection fitting. The individual wires or filaments placed on the hose connector are pressed together with the braid of the hose, optionally also without this, together with the usual compression sleeve. Drilling, kinking and subsequent securing of the hose support are not necessary.
  • the spiral or helically corrugated hoses made of an elastic material, in particular of PTFE, are produced in a thermal process from a tube.
  • a corresponding wall is molded into the PTFE tube from the outside in, so that a spiral wave is created.
  • the shaft produced in this way is deep and gives the hose great flexibility and full vacuum resistance.
  • the curled Hose is cut to length, provided with connections and brought to the trade as a ready-to-install product. In most cases, braiding is provided to increase the compressive strength.
  • the inventive design of the spiral or helically corrugated hose in which a rope is inserted into the corrugation troughs of the hose increases the stability of the waves, in particular when the hose is used at temperatures which are in the order of magnitude of the mold temperature of the hose.
  • the embodiment of the spiral or helically corrugated hose according to the invention advantageously also enables its use in the case of strong and permanent bending loads and in the case of pulsating loads due to changes in the internal pressure.
  • a spiral or helically corrugated hose 1 is shown, which has troughs 2 and crests 4.
  • the wave crests 4 are enveloped by a braid 6.
  • the hose 1 is inserted with the braid 6 in a connection fitting 5 and clamped in this.
  • a rope 3 is inserted into the troughs 2 of the spiral or helically corrugated hose 1.
  • This rope 3 consists of metallic individual wires or mono- or multifilaments made of plastic.
  • connection fitting 5 the rope 3 is spliced and the spliced ends of the rope are placed on the hose connector and are pressed together, in the illustrated embodiment with the braiding of the hose with the usual compression sleeve.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
EP91250022A 1990-02-23 1991-01-30 Manche ondulé enroulé en hélice Withdrawn EP0449395A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9002309U DE9002309U1 (de) 1990-02-23 1990-02-23 Spiral- oder wendelgewellter Schlauch
DE9002309U 1990-02-23

Publications (1)

Publication Number Publication Date
EP0449395A1 true EP0449395A1 (fr) 1991-10-02

Family

ID=6851435

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91250022A Withdrawn EP0449395A1 (fr) 1990-02-23 1991-01-30 Manche ondulé enroulé en hélice

Country Status (2)

Country Link
EP (1) EP0449395A1 (fr)
DE (1) DE9002309U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6907906B1 (en) 1999-10-20 2005-06-21 The Goodyear Tire & Rubber Company Cuffed hose and method of manufacture

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011005344A1 (de) * 2011-03-10 2012-09-13 Siemens Aktiengesellschaft Flexible Dampfleitung insbesondere für solarthermische Kraftwerke

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1345971A (en) * 1918-10-26 1920-07-06 Star Richard Flexible connection
GB861770A (en) * 1958-10-31 1961-02-22 Superflexit Improvements in end fittings for use with flexible hoses, conduits or the like
US3857415A (en) * 1970-09-15 1974-12-31 Everflex Prod Inc Reinforced convoluted tubing of polytetrafluoroethylene
EP0104835A1 (fr) * 1982-09-29 1984-04-04 Standard Hose Limited Conduite en tuyaux souples

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1383313A (en) * 1971-05-21 1974-02-12 Compoflex Co Ltd Flexible tubing or hoses
DE2558847A1 (de) * 1975-12-27 1977-07-07 Pahl Gummi Asbest Flexible foerderleitung fuer extrem kalte fluessigkeiten
US4142554A (en) * 1977-10-28 1979-03-06 Parker-Hannifin Corporation Hose construction
DE3042310C2 (de) * 1980-11-10 1986-09-25 Witzenmann GmbH, Metallschlauch-Fabrik Pforzheim, 7530 Pforzheim Leitungselement in Form eines ringgewellten Schlauches oder Balges
DE3401931C2 (de) * 1984-01-20 1986-06-12 Continental Gummi-Werke Ag, 3000 Hannover Biegsamer Schlauch
DE3407500A1 (de) * 1984-03-01 1985-09-05 Poppe & Co Gießener Gummiwarenfabrik GmbH & Co KG, 6300 Gießen Rohrfoermiger faltenbalg

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1345971A (en) * 1918-10-26 1920-07-06 Star Richard Flexible connection
GB861770A (en) * 1958-10-31 1961-02-22 Superflexit Improvements in end fittings for use with flexible hoses, conduits or the like
US3857415A (en) * 1970-09-15 1974-12-31 Everflex Prod Inc Reinforced convoluted tubing of polytetrafluoroethylene
EP0104835A1 (fr) * 1982-09-29 1984-04-04 Standard Hose Limited Conduite en tuyaux souples

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6907906B1 (en) 1999-10-20 2005-06-21 The Goodyear Tire & Rubber Company Cuffed hose and method of manufacture

Also Published As

Publication number Publication date
DE9002309U1 (de) 1990-06-07

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